[Code of Federal Regulations]
[Title 33, Volume 2]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 33CFR164.43]

[Page 610]
 
                TITLE 33--NAVIGATION AND NAVIGABLE WATERS
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 164--NAVIGATION SAFETY REGULATIONS--Table of Contents
 
Sec. 164.43  Automatic Identification System Shipborne Equipment--Prince 
William Sound.

    (a) Until July 1, 2004, each vessel required to provide automated 
position reports to a Vessel Traffic Service (VTS) under Sec. 165.1704 
of this subchapter must do so by an installed Automatic Identification 
System Shipborne Equipment (AISSE) system consisting of a:
    (1) Twelve-channel all-in-view Differential Global Positioning 
System (dGPS) receiver;
    (2) Marine band Non-Directional Beacon receiver capable of receiving 
dGPS error correction messages;
    (3) VHF--FM transceiver capable of Digital Selective Calling (DSC) 
on the designated DSC frequency; and
    (4) Control unit.
    (b) An AISSE must have the following capabilities:
    (1) Use dGPS to sense the position of the vessel and determine the 
time of the position using Universal Coordinated Time (UTC);
    (2) Fully use the broadcast type 1, 2, 3, 5, 6, 7, 9, and 16 
messages, as specified in RTCM Recommended Standards for Differential 
NAVSTAR GPS Service in determining the required information;
    (3) Achieve a position error which is less than ten meters (32.8 
feet) 2 distance root mean square (2 drms) from the true North American 
Datum of 1983 (NAD 83) in the position information transmitted to a VTS;
    (4) Achieve a course error of less than 0.5 degrees from true course 
over ground in the course information transmitted to a VTS;
    (5) Achieve a speed error of less than 0.05 knots from true speed 
over ground in the speed information transmitted to a VTS;
    (6) Receive and comply with commands broadcast from a VTS as DSC 
messages on the designated DSC frequency;
    (7) Receive and comply with RTCM messages broadcast as minimum shift 
keying modulated medium frequency signals in the marine radiobeacon 
band, and supply the messages to the dGPS receiver;
    (8) Transmit the vessel's position, tagged with the UTC at position 
solution, course over ground, speed over ground, and Lloyd's 
identification number to a VTS;
    (9) Display a visual alarm to indicate to shipboard personnel when a 
failure to receive or utilize the RTCM messages occurs;
    (10) Display a separate visual alarm which is triggered by a VTS 
utilizing a DSC message to indicate to shipboard personnel that the U.S. 
Coast Guard dGPS system cannot provide the required error correction 
messages; and
    (11) Display two RTCM type 16 messages, one of which must display 
the position error in the position error broadcast.
    (c) An AISSE is considered non-operational if it fails to meet the 
requirements of paragraph (b) of this section.
    Note: Vessel Traffic Service (VTS) areas and operating procedures 
are set forth in Part 161 of this chapter.

[CGD 90-020, 59 FR 36334, July 15, 1994, as amended by CGD 97-023, 62 FR 
33365, June 19, 1997; USCG-2003-14757, 68 FR 39367, July 1, 2003]